package com.atguigu.springboot.controller;

import com.atguigu.springboot.exception.UserNotExistException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;

/**
 * @author 张晓
 * @create 2020-10-19 11:59
 */
@ControllerAdvice
public class MyExceptionHandler {

    //1.浏览器客户端返回的都是json
//    @ResponseBody
//    @ExceptionHandler(UserNotExistException.class)
//    public Map<String,Object> handleException(Exception e){
//        Map<String,Object> map = new HashMap<>();
//        map.put("code","user.notexits");
//        map.put("message",e.getMessage());
//        return map;
//    }
    @ExceptionHandler(UserNotExistException.class)
    public String handleException(Exception e, HttpServletRequest request){
        Map<String,Object> map = new HashMap<>();
        //传入我们自己的状态码 4xx 5xx
        /**
         * Integer statusCode = (Integer) request
         * 				.getAttribute("javax.servlet.error.status_code");
         */
        request.setAttribute("javax.servlet.error.status_code",400);
        map.put("code","user.notexits");
        map.put("message","用户出错了");
        request.setAttribute("ext",map);
        return "forward:/error";
    }
}
